Cage Assembly and Electrically Powered Tool Having Cage

Abstract

An electrically powered tool includes a cage assembly that has a cage, driving component, executing component, and cylindrical housing. The cage includes a base, a rear cage extending rearwards from the base, and a front cage extending forwards from the base. The driving component is positioned on the rear cage. The executing component is positioned on the front cage, and includes an output shaft extending forwards. The driving and executing components are positioned on the cage so as to form the cage assembly. The cage assembly is received in the cylindrical housing, and is configured to be mounted in the cylindrical housing in a modular fashion. Prior to insertion in the housing, the driving and executing components are jointly mounted into the cage to form the cage assembly so as to reduce structural redundancy via fixing and fitting, such that an overall body of the assembly smaller and more compact.

1 . A holder assembly for an electric power tool, comprising:
 a holder, including:
 a rear holder; and 
 a front holder 
   a driving component positioned at the rear holder; and   an execution component, and including a forward-extending output shaft;   wherein the holder assembly is configured to be mounted, in an insertion fashion, into a tubular housing in a front-rear direction.   
     
     
         2 . The holder assembly according to  claim 1 , wherein:
 the driving component comprises includes at least a battery; and   the execution component further includes an electric motor and a reduction gear set.   
     
     
         3 . The holder assembly according to  claim 2 , wherein:
 the driving component further includes a circuit board; and   the rear holder includes a battery accommodation portion and a circuit board accommodation portion, each arranged paralled to the output shaft.   
     
     
         4 . The holder assembly according to  claim 1 , further comprising:
 connection components configured to electrically connect the driving component and the execution component so as to form a working circuit.   
     
     
         5 . The holder assembly according to  claim 4 , further comprising:
 a base portion positioned between the front holder and the rear holder; and   a start switch mounted on the base portion and forming a portion of the working circuit, wherein:
 the start switch is a micro switch or a pressure sensitive switch; and 
 one end of the execution component that is close to the base portion includes a switch pressing portion that mates with the start switch. 
   
     
     
         6 . The holder assembly according to  claim 1 , wherein:
 the execution component is positioned in the front holder such that the execution component is moveable forward and rearward; and   the driving component is fixedly positioned at the rear holder.   
     
     
         7 . An electric power tool, comprising:
 a tubular housing formed as an integrally injection molded piece, and including a sleeve cavity having an axial opening; and   a holder assembly, including:
 a holder, having:
 a rear holder; and 
 a front holder 
 
 a driving component positioned at the rear holder; and 
 an execution component positioned at the front holder, and having a forward-extending output shaft 
   wherein the holder assembly is embedded into the housing in a front-rear direction via the axial opening.   
     
     
         8 . The electric power tool accoding to  claim 7 , wherein:
 the sleeve cavity of the housing further includes a stop portion;   the electric power tool further comprises a rear cover mounted to the axial opening; and   the holder assembly is limited between the stop portion and the rear cover when the rear cover is mounted to the housing.   
     
     
         9 . The electric power tool according to  claim 8 , wherein:
 the execution component is positioned in the front holder such that the execution component is moveable forward and rearward; and   the driving component is fixedly positioned at the rear holder.   
     
     
         10 . The electric power tool according to  claim 8 , further comprising:
 a pre-placement component configured to elastically pre-place the execution component at an end away from the driving component.   
     
     
         11 . The electric power tool according to  claim 8 , wherein:
 the holder assembly further includes a reversing switch; and   an outside wall of the tubular housing includes an operating portion configured to drive the reversing switch.   
     
     
         12 . The electric power tool according to  claim 8 , wherein:
 an outer wall of the integrally injection molded tubular housing includes a recess and forms a corresponding contracted portion in the sleeve cavity; and   the stop portion is positioned at the contracted portion.   
     
     
         13 . The electric power tool according to  claim 8 , wherein the sleeve cavity further has a guide component configured to guide a mounting of the holder assembly in the sleeve cavity.